121589-56-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121589-56-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,5,8 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 121589-56:
(8*1)+(7*2)+(6*1)+(5*5)+(4*8)+(3*9)+(2*5)+(1*6)=128
128 % 10 = 8
So 121589-56-8 is a valid CAS Registry Number.